Peter Pan (1950). Leonard Bernstein

The CD restores music that was discarded from the musical when it ran
on Broadway in 1950 and '51. It features musical theater veteran Linda
Eder and baritone Daniel Narducci. Alexander Frey is the conductor.

In the 1950 production, Jean Arthur was Peter Pan and Boris Karloff Captain Hook. Ok, given Jean Arthur's voice, I'd really like to hear her sing; less so, Boris Karloff.

Update: A cursory check of iTunes, Rhapsody, and singingfish didn't turn up any Jean Arthur MP3s.

In today's SF Chronicle, Robert Hurwitt has a capsule review of the CD and says the work is "smart and vigorously tuneful." He also describes how much of the Bernstein score and half of the songs had to be dropped because Arthur and Karloff couldn't sing.

Jimmie Stewart is another actor for whom it is a delight to write
music. Paradoxically, his speaking voice is not “musical.” But it has a
slightly nasal quality and occasionally “cracks” in a way that is easy
to complement. Jean Arthur's voice is somewhat similar. Just why this type of voice should be easy to write for, I
don't know. One might speculate that since these voices have little
colour in themselves, the complementary musical backdrop doesn't bump
into or fall over the dialogue. The mere fact that such voices are
unmusical gives them an additional definition.